Eli5: What does percent in DNA mean?

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Siblings share 50% of their DNA. Then scientists say we have 1-4% Neanderthal DNA, but say we are 99% related to chimps. Then there is the fact that we share 60% of our DNA with bananas.

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Anonymous 0 Comments

It’s not scientists that say those things, it’s journalists lazily reporting it and forgetting all the “boring” details and explanations.

You can think of DNA has the “Blueprint” for an organism to grow, or the alphabet used to write those instructions.

If we keep the alphabet analogy:

* HORSE and SHORE share 100% of the same letters
* They are 80% similar.

They’re still absolutly not the same, nor even remotely related

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